Tonneau cover



FIG. 1 is a perspective view of a tonneau cover;

FIG. 2 is a top view of the tonneau cover;

FIG. 3 is a front view of the tonneau cover of FIG. 1;

FIG. 4 is a rear view of the tonneau cover of FIG. 1;

FIG. 5 is a right-hand view of the tonneau cover of FIG. 1;

FIG. 6 is the left-hand view of the tonneau cover of FIG. 1; and,

FIG. 7 is an underside view of the tonneau cover of FIG. 1.

CLAIM An ornamental design for a tonneau cover, as shown and described.